Aminaphtone API from Mexico
Aminaphtone is a pyrazole derivative used for capillary fragility treatment in vascular disorders. Features 4-amino-3-methyl-1-phenylpyrazol-5-one structure qualifying under HTS 2933.19.4500. Pharmaceutical grade for tablet manufacturing.
Duty Rate — Mexico → United States
100%
Rate breakdown
9903.04.6096.3%Pharmaceuticals: patented pharma articles — 100% floor rate
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Include vascular drug clinical trial data and bioavailability studies in import dossier
• Verify phenylpyrazolone identity via melting point (157-160°C) and TLC profiling
• Declare as human drug to access .4500; research chemical status shifts classification